Considering temperature dependence of thermo-physical
properties of sandy soils in two scenarios of oil pollution |
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| Authors: | Aleksey V Malyshev and Anatoly M Timofeev |
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| Institution: | Institute of Physical-Technical Problems of the North. V.P. Larionov, Siberian Branch of the Russian Academy of Sciences,
Yakutsk 677000, Russia;Institute of Physical-Technical Problems of the North. V.P. Larionov, Siberian Branch of the Russian Academy of Sciences,
Yakutsk 677000, Russia |
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| Abstract: | We analyzed the heat conductivity and volumetric heat capacity of sandy soil contaminated in two scenarios of oil pollution,
and also determined the temperature dependencies of these changed thermophysical properties. In the first pollution
scenario, the oil product was introduced into wet river sand, and in the second case, dry sand was contaminated by the oil
product and was then moistened with water. By considering these two scenarios as multicomponent dispersion systems
with varying degrees of contamination and humidity, and by using a polystructural granular model with pore spaces and
closed inclusions, we calculated that the heat conductivity of the sandy soil increased under the first pollution scenario and
decreased under the second, but the change in the volumetric heat capacity of the sandy soil was proportional only to the
amount of oil pollution, not the manner in which it was introduced. We also determined the temperature dependencies of
these two thermophysical properties of sandy soil when polluted by oil, of which information will be useful for future
containment and remediation of oil-contaminated soil. |
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| Keywords: | sandy soil heat conductivity heat capacity heat resistance pollution oil product unfrozen water volume
concentration coordination number |
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